<?php

namespace App\Remote;

use App\Enum\MimeType;
use Illuminate\Http\Client\ConnectionException;
use Illuminate\Support\Facades\Cache;
use Illuminate\Support\Facades\Http;

class ImageFetcher
{

    private array $options = [
        'cache' => [
            'enabled' => true,
            'prefix' => 'image_fetcher_',
            'ttl' => 3600,
            ],
        'http' => [
            'timeout' => 60,
            'userAgent' => 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/131.0.0.0 Safari/537.36'
        ]
    ];

    public function __construct(private readonly string $url = "")
    {
        // Global useragent
        Http::globalRequestMiddleware(fn ($request) => $request->withHeader(
            'User-Agent', $this->options['http']['userAgent']
        ));
    }

    public function forget(): bool
    {
        if (!$this->options['cache']['enabled']) {
            return false;
        }

        return Cache::forget($this->cacheName($this->url));
    }

    public function getExtension(): string
    {
        $path = parse_url($this->url, PHP_URL_PATH);
        return pathinfo($path, PATHINFO_EXTENSION);
    }

    public function getMimeType(): MimeType
    {
        return MimeType::{$this->getExtension()};
    }

    private function cacheName(string $url): string
    {
        return $this->options['cache']['prefix'] . base64_encode($url);
    }

    /**
     * @return bool
     */
    protected function isCached(): bool
    {
        return $this->options['cache']['enabled'] && Cache::has($this->cacheName($this->url));
    }

    /**
     * @throws ConnectionException
     */
    public function fetch()
    {
        if ($this->isCached()) {
            return Cache::get($this->cacheName($this->url));
        }

        $response = Http::timeout($this->options['http']['timeout'])->get($this->url);
        $image = $response->body();

        // Write to cache
        if ($this->options['cache']['enabled']) {
            Cache::add($this->cacheName($this->url), $image, $this->options['cache']['ttl']);
        }

        return $image;
    }

}